HTTP status codes / 5xx — Server errors
WebDAV: the server has no space to complete the request.
The server cannot store what the request requires — WebDAV origin, occasionally borrowed for "disk full" conditions on upload endpoints.
Free server storage or raise quotas; the client cannot fix it.
Server-side note: Free server storage or raise quotas; clients cannot fix this one.
The fastest way to pin down a 507 is to reproduce the exact request and inspect what actually went over the wire — status, headers, timing and body, without your app code in the way. That is what an API client is for; ReqPad does it from your phone, with every request saved to history.
500 Internal Server Error · 501 Not Implemented · 502 Bad Gateway · 503 Service Unavailable · 504 Gateway Timeout · 505 HTTP Version Not Supported — or the full reference.
Build the request, send it, read status + headers + timing — on your iPhone. Free to start.